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Posted to alt.home.repair
bill
 
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Default gas furnace- what is normal?

Carrier Gas furnace model 58PAV090. What is the normal heating
sequence? during the heat cycle, is it normal for the gas to cycle on
and off while the blower continues to run. Its like the high temp
limit switch is closing then reopening (during a cycle where the
thermostst has not been satisfied). should the gas valve cycle or is
this typically not normal. not enough air flow...filter, open
registers....thanks bill